It happened outside the Olney station at Mascher Street and Tabor Road at about 8:30 Saturday night.
The 14-year-old girl says she was approached by three men on the train platform and taken into a wooded area and raped.
Police only have a brief description of the males involved - all described as Hispanic males in their 20's and one wearing a blue and green striped shirt.
The victim was treated and released from the hospital.
